MapView With MKPolyLines For route

gistfile1.txt

using System;
using MonoTouch.UIKit;
using System.Collections.Generic;
using MonoTouch.MapKit;
using System.Threading;
using ClanceysLib;
using MonoTouch.Foundation;
using System.Linq;
using MonoTouch.CoreLocation;
using System.Drawing;
using MapStuff.DrawMap;
using MonoTouch.ObjCRuntime;
using System.Xml.Linq;
using MonoTouch.CoreGraphics;
namespace ParkApp
{
	public class MapViewController : UIViewController
	{

		public List<MKPolyline> roads = new List<MKPolyline> ();
		public Park Park;
		public MKMapView map;
		public UISegmentedControl switcher;
		public MBProgressHUD progress;
		public MKMapRect maxRect;
		public List<PersonAnnotation> People;
		public bool LockMap = false;
		public PartySettingsDvc partySettingsDvc;
		public MapViewController (Park park) : base()
		{
			People = new List<PersonAnnotation> ();
			Park = park;
			map = new MKMapView ();
			map.Frame = this.View.Bounds;
			map.MapType = MKMapType.Hybrid;
			map.Region = getMapBounds ();
			//map.SetVisibleMapRect(new MKMapRect(46286327.3006886 , 107394439.844582,12713.8773526251 , 8475.9182350859),false);
			maxRect = map.visibleMapRect;
			map.Delegate = new MapViewDelegate (this);
			map.ShowsUserLocation = true;
			
			
			switcher = new UISegmentedControl (new string[] { "Rides", "Food", "Restrooms" });
			switcher.Frame = new RectangleF (35, 0, 250, 25);
			switcher.ControlStyle = UISegmentedControlStyle.Bar;
			switcher.SelectedSegment = 0;
			switcher.ValueChanged += delegate { ShowAnnotations (); };
			this.NavigationItem.RightBarButtonItem = new UIBarButtonItem ("Party", UIBarButtonItemStyle.Plain, delegate { 
				partySettingsDvc = new PartySettingsDvc();
				this.NavigationController.PushViewController(partySettingsDvc,true);
			});
			
			this.NavigationItem.TitleView = switcher;
			this.View.AddSubview (map);
			progress = new MBProgressHUD (UIApplication.SharedApplication.KeyWindow);
			Thread thread = new Thread (LoadPaths);
			thread.Start ();
			//AddPaths();
			//AddWays();
			//this.Add(new OptionsView());
			
		}

		public override void ViewDidAppear (bool animated)
		{
			//this.NavigationItem.TitleView.AddSubview(switcher);
			base.ViewDidAppear (animated);
		}

		public override void ViewWillAppear (bool animated)
		{
			base.ViewWillAppear (animated);
		}

		public void UpdatePeopleLocations (ParkHopperLibrary.Models.PartyMember[] people)
		{
			map.RemoveAnnotations (People.ToArray ());
			People.Clear ();
			
			foreach (var person in people)
			{
				var ann = new PersonAnnotation (person);
				People.Add (ann);
				map.AddAnnotation (ann);
			}
			
		}

		public MKCoordinateRegion getMapBounds ()
		{
			return new MKCoordinateRegion (new CLLocationCoordinate2D (33.8092652025279, -117.919469247912), new MKCoordinateSpan (0.0135665781450101, 0.0113583849480818));
		}
		bool hasAnnotations;
		public void ShowAnnotations ()
		{
			Console.WriteLine ("start");
			if (hasAnnotations)
			{
				map.RemoveAnnotations (map.Annotations.Where (x => x is MyAnnotation || x is RestaurantAnnotation || x is RestroomAnnotation).Select (x => (MKAnnotation)x).ToArray ());
				hasAnnotations = false;
			}
			Console.WriteLine ("past the linq");
			Thread thread = new Thread (getAnnotations);
			thread.Start ();
			
		}

		private void getAnnotations ()
		{
			using (new NSAutoreleasePool ())
			{
				if (switcher.SelectedSegment == 0)
					AddAttactions ();
				else if (switcher.SelectedSegment == 1)
					AddFood();
				else
				{
					AddRestrooms();
				}
				
			}
		}
		private void AddFood()
		{
			Console.WriteLine("Add Restaurants");
			var restaurants = Database.Main.Table<Restaurant>().Where(x=> x.Park == Park).ToArray();
			foreach( var restaurant in restaurants)
			{
				this.InvokeOnMainThread( delegate {
				map.AddAnnotation(new RestaurantAnnotation(restaurant));
				});
				hasAnnotations = true;
			}
		}
		
		private void AddRestrooms()
		{
			Console.WriteLine("Add Restrooms");
			var restroooms = Database.Main.Table<Restroom>().Where(x=> x.Park == Park).ToArray();
			foreach( var restroom in restroooms)
			{
				this.InvokeOnMainThread( delegate {
				map.AddAnnotation(new RestroomAnnotation(restroom));
				});
				hasAnnotations = true;
			}
		}

		public void AddAttactions ()
		{
			Console.WriteLine ("Add Attractions");
			var attractions = Database.Main.Table<Tag> ().Where (x => x.k == "attraction" && x.Park == Park).Select (y => y.nodeId).ToArray ();
			foreach (var attraction in attractions)
			{
				var name = Database.Main.Table<Tag> ().Where (x => x.nodeId == attraction && x.k == "name").Select (y => y.v).FirstOrDefault () ?? "";
				var type = Database.Main.Table<Tag> ().Where (x => x.nodeId == attraction && x.k == "attraction").Select (y => y.v).FirstOrDefault () ?? "";
				var node = Database.Main.Table<Node> ().Where (x => x.id == attraction).FirstOrDefault ();
				this.BeginInvokeOnMainThread (delegate { map.AddAnnotation (new MyAnnotation (new CLLocationCoordinate2D (node.lat, node.lon), name, type, node.id)); });
				hasAnnotations = true;
			}
		}
		
		public void LoadPaths ()
		{
			using (new NSAutoreleasePool ())
			{
				progress.Show (true);
				//AddWays();
				addWaysDatabase ();
				
				ShowAnnotations ();
				progress.Hide (true);
			}
		}


		public void addWaysDatabase ()
		{
			var ways = Database.Main.Table<Way> ().ToArray ();
			foreach (var way in ways)
			{
				List<CLLocationCoordinate2D> points = new List<CLLocationCoordinate2D> ();
				
				foreach (var node in Database.Main.Table<WayNode> ().Where (x => x.WayId == way.id).ToArray ())
				{
					points.Add (new CLLocationCoordinate2D (node.lat, node.lon));
				}
				map.AddOverlay (MKPolyline.FromCoordinates (points.ToArray ()));
			}
		}

		public class MyAnnotation : MKAnnotation
		{
			private CLLocationCoordinate2D _coordinate;
			private string _title, _subtitle;
			public override CLLocationCoordinate2D Coordinate {
				get { return _coordinate; }
				set { _coordinate = value; }
			}
			public override string Title {
				get { return _title; }
			}
			public override string Subtitle {
				get { return _subtitle; }
			}
			public long NodeId { get; set; }
			/// <summary>
			/// Need this constructor to set the fields, since the public
			/// interface of this class is all READ-ONLY
			/// <summary>
			public MyAnnotation (CLLocationCoordinate2D coord, string t, string s, long nodeID) : base()
			{
				_coordinate = coord;
				_title = t;
				_subtitle = s;
				NodeId = nodeID;
			}
			
		}

		public class PersonAnnotation : MKAnnotation
		{
			public ParkHopperLibrary.Models.PartyMember PartyMember { get; set; }

			private CLLocationCoordinate2D _coordinate;
			private string _title, _subtitle;
			public override CLLocationCoordinate2D Coordinate {
				get { return _coordinate; }
				set { _coordinate = value; }
			}
			public override string Title {
				get { return _title; }
			}
			public override string Subtitle {
				get { return _subtitle; }
			}
			public long NodeId { get; set; }
			/// <summary>
			/// Need this constructor to set the fields, since the public
			/// interface of this class is all READ-ONLY
			/// <summary>
			public PersonAnnotation (ParkHopperLibrary.Models.PartyMember partyMember) : base()
			{
				_coordinate = new CLLocationCoordinate2D (partyMember.Latitude, partyMember.Longitude);
				_title = partyMember.DisplayName;
				_subtitle = (DateTime.UtcNow - partyMember.LastUpdate).ToString ();
				PartyMember = partyMember;
			}
			
			public UIFont Font {
				get { return UIFont.FromName ("Helvetica", 12);}	
			}

			public void UpdatesPerson (ParkHopperLibrary.Models.PartyMember partyMember)
			{
				PartyMember = partyMember;
				_coordinate = new CLLocationCoordinate2D (partyMember.Latitude, partyMember.Longitude);
				
			}
			
			UIImage image;
			public UIImage Image (SizeF textSize)
			{
				if(image == null)
				using (var cs = CGColorSpace.CreateDeviceRGB ())
				{
					UIImage template = Images.Person;
					var height =  template.Size.Height  + textSize.Height;
					var width = Math.Max( template.Size.Width , textSize.Width);
					using (var context = new CGBitmapContext (IntPtr.Zero,(int) width,(int) height, template.CGImage.BitsPerComponent, 0, cs, CGImageAlphaInfo.PremultipliedLast))
					{
						//context.ScaleCTM (0.5f, -1);
						//context.TranslateCTM (0, 0);
						context.TranslateCTM (0, 0);
						context.DrawImage (new RectangleF ((width - template.Size.Width) / 2,0, template.Size.Width, template.Size.Height), template.CGImage);
						context.SetRGBFillColor (1, 1, 1, 1);
						
						context.SelectFont ("Helvetica", 12f, CGTextEncoding.MacRoman);
						
						// Pretty lame way of measuring strings, as documented:
						
						var ns = new NSString (PartyMember.DisplayName);
						UIFont ff = UIFont.FromName ("Helvetica", 10);
						
						//context.ScaleCTM (-1, 1);
						float textX = (width - textSize.Width) / 2;
						float textY = height - textSize.Height;
						
						
						context.SetTextDrawingMode (CGTextDrawingMode.Fill);
						context.ShowTextAtPoint (textX,textY, PartyMember.DisplayName);
						
						// The big string
						
						context.SetRGBFillColor (0, 0, 0, 1);
						context.SetTextDrawingMode (CGTextDrawingMode.Fill);
						
						context.StrokePath ();
						image =  UIImage.FromImage (context.ToImage ());
					}
				}
				return image;
			}
		}
		
		public class RestaurantAnnotation : MKAnnotation
		{
			public Restaurant Restaurant { get; set; }

			private CLLocationCoordinate2D _coordinate;
			private string _title, _subtitle;
			public override CLLocationCoordinate2D Coordinate {
				get { return _coordinate; }
				set { _coordinate = value; }
			}
			public override string Title {
				get { return _title; }
			}
			public override string Subtitle {
				get { return _subtitle; }
			}
			public long NodeId { get; set; }
			/// <summary>
			/// Need this constructor to set the fields, since the public
			/// interface of this class is all READ-ONLY
			/// <summary>
			public RestaurantAnnotation (Restaurant restaurant) : base()
			{
				_coordinate = new CLLocationCoordinate2D (restaurant.lat, restaurant.lon);
				_title = restaurant.Name;
				_subtitle = restaurant.Cuisine ;
				Restaurant = restaurant;
			}
			
		}
		
		public class RestroomAnnotation : MKAnnotation
		{
			public Restroom Restroom { get; set; }

			private CLLocationCoordinate2D _coordinate;
			private string _title, _subtitle;
			public override CLLocationCoordinate2D Coordinate {
				get { return _coordinate; }
				set { _coordinate = value; }
			}
			public override string Title {
				get { return _title; }
			}
			public override string Subtitle {
				get { return _subtitle; }
			}
			public long NodeId { get; set; }
			/// <summary>
			/// Need this constructor to set the fields, since the public
			/// interface of this class is all READ-ONLY
			/// <summary>
			public RestroomAnnotation (Restroom restroom) : base()
			{
				_coordinate = new CLLocationCoordinate2D (restroom.lat, restroom.lon);
				Restroom = restroom;
			}
			
		}

		class MapViewDelegate : MKMapViewDelegate
		{
			MapViewController _viewController;

			MKMapRect lastGoodMapRect;
			bool manuallyChangingMapRect;

			public MapViewDelegate (MapViewController viewController)
			{
				_viewController = viewController;
			}

			public override void RegionWillChange (MKMapView mapView, bool animated)
			{
				if (manuallyChangingMapRect)
					return;
				lastGoodMapRect = mapView.visibleMapRect;
			}
			/*
				if (_viewController.currentAnnotationView != null)
				{
					_viewController.currentAnnotationView.Hidden = true;
				}
				*/
			public bool MKMapRectContainsRect (MKMapRect firstRect, MKMapRect secondRect)
			{
				var rect2 = (new Rectangle ((int)secondRect.MinX, (int)secondRect.MinY, (int)(secondRect.MaxX - secondRect.MinX), (int)(secondRect.MaxY - secondRect.MinY)));
				return (new Rectangle ((int)firstRect.MinX, (int)firstRect.MinY, (int)(firstRect.MaxX - firstRect.MinX), (int)(firstRect.MaxY - firstRect.MinY))).Contains (rect2);
			}
			public override void RegionChanged (MKMapView mapView, bool animated)
			{
				if (manuallyChangingMapRect || !_viewController.LockMap)
					//prevents possible infinite recursion when we call setVisibleMapRect below
					return;
				
				bool mapContainsOverlay = MKMapRectContainsRect (mapView.visibleMapRect, _viewController.maxRect);
				
				if (mapContainsOverlay)
				{
					// The overlay is entirely inside the map view but adjust if user is zoomed out too much...
					double widthRatio = _viewController.maxRect.Size.Width / mapView.visibleMapRect.Size.Width;
					double heightRatio = _viewController.maxRect.Size.Height / mapView.visibleMapRect.Size.Height;
					//adjust ratios as needed
					if ((widthRatio < 0.6) || (heightRatio < 0.6))
					{
						manuallyChangingMapRect = true;
						mapView.SetVisibleMapRect (_viewController.maxRect, true);
						manuallyChangingMapRect = false;
					}
				}


				else if (!_viewController.maxRect.Intersects (mapView.visibleMapRect))
				{
					// Overlay is no longer visible in the map view.
					// Reset to last "good" map rect...
					mapView.SetVisibleMapRect (lastGoodMapRect, true);
				}
			}


			public override MKOverlayView GetViewForOverlay (MKMapView mapView, NSObject overlay)
			{
				MKOverlayView overlayView = null;
				if (overlay is MKPolygon)
				{
					var polygon = (MKPolygon)overlay;
					var polygonView = new MKPolygonView (polygon);
					polygonView.FillColor = polygon.Subtitle == "attraction" ? UIColor.Blue : UIColor.Green;
					polygonView.StrokeColor = UIColor.Gray;
					polygonView.LineWidth = 3;
					overlayView = polygonView;
				}


				else if (overlay is MKPolyline)
				{
					var polylineView = new MKPolylineView ((MKPolyline)overlay);
					polylineView.FillColor = UIColor.Red;
					polylineView.StrokeColor = UIColor.Red;
					polylineView.LineJoin = MonoTouch.CoreGraphics.CGLineJoin.Round;
					polylineView.LineDashPattern = new NSNumber[] { new NSNumber (1), new NSNumber (1) };
					polylineView.LineWidth = 3;
					overlayView = polylineView;
				}
				return overlayView;
			}
			public override MKAnnotationView GetViewForAnnotation (MKMapView mapView, NSObject annotation)
			{
				MKAnnotationView annotationView = null;
				if (annotation is MyAnnotation)
				{
					var pin = annotation as MyAnnotation;
					var pinView = new MKAnnotationView (pin, "colors");
					var section = Updates.AttractionSections.Where (x => x.Key == pin.NodeId).Select (y => y.Value).FirstOrDefault () ?? "";
					
					
					pinView.RightCalloutAccessoryView = UIButton.FromType (UIButtonType.DetailDisclosure);
					((UIButton)pinView.RightCalloutAccessoryView).TouchDown += delegate {
						Console.WriteLine("I was touched!");	
					};//.AddTarget (this, new Selector ("openSpot:"), UIControlEvent.TouchUpInside);
					pinView.Enabled = true;
					pinView.CanShowCallout = true;
					pinView.CenterOffset = new PointF (8, -13);
					pinView.CalloutOffset = new PointF (-8, 0);
					pinView.Image = string.IsNullOrEmpty (section) ? Images.GrayPin : Updates.SectionColors[section];
					annotationView = pinView;
					
				}
				else if (annotation is PersonAnnotation)
				{
					var person = annotation as PersonAnnotation;
					var view = new MKAnnotationView (person, "person");
					view.Image = person.Image(view.StringSize(person.PartyMember.DisplayName,person.Font));
					//view.SetSelected(true,false);
					view.Enabled = true;
					view.CanShowCallout = true;
					view.RightCalloutAccessoryView = UIButton.FromType (UIButtonType.DetailDisclosure);
					((UIButton)view.RightCalloutAccessoryView).TouchDown += delegate {
						Console.WriteLine("I was touched!");
						var alert = new UIAlertView("Are you sure?","Do you want to send " + person.PartyMember.DisplayName + " and update request?",null,"No Thanks","Yes");
						alert.Dismissed += delegate(object sender, UIButtonEventArgs e) {
							if(e.ButtonIndex > 0){
								Settings.ShowNetwork();
							}
						};
						alert.Show();	 
					};
					
					annotationView = view;
					
				}
				else if (annotation is RestaurantAnnotation)
				{
					var resaurant = annotation as RestaurantAnnotation;
					var view = new MKAnnotationView (resaurant, "resaurant");
					view.Image = Images.Restaurant;
					//view.SetSelected(true,false);
					view.Enabled = true;
					view.CanShowCallout = true;
					annotationView = view;
				}
				else if (annotation is RestroomAnnotation)
				{
					var restroom = annotation as RestroomAnnotation;
					var view = new MKAnnotationView (restroom, "restroom");
					view.Image = Images.Restroom;
					//view.SetSelected(true,false);
					view.Enabled = true;
					//view.CanShowCallout = true;
					annotationView = view;
				}
				else if (annotation is GeometryAnnotation || annotation is MergedGeometryAnnotation)
				{
					Console.WriteLine ("it's a line class");
					
					//GeometryAnnotation geometryAnnotation = annotation as GeometryAnnotation;
					
					LinePolygonAnnotationView _annotationView = new LinePolygonAnnotationView (new RectangleF (0, 0, mapView.Frame.Size.Width, mapView.Frame.Size.Height));
					_annotationView.Annotation = annotation;
					_annotationView.MapView = mapView;
					
					
					//_viewController.currentAnnotationView = _annotationView;
					annotationView = _annotationView;
				}
				return annotationView;
			}
			public override void MapLoaded (MKMapView mapView)
			{
			}
		}
			/*
				foreach(var person in _viewController.People)
					mapView.SelectAnnotation(person,false);
					*/			
			}
}